diff --git a/src/nvenc/nvenc_base.cpp b/src/nvenc/nvenc_base.cpp
index 80376deb..e7eeed70 100644
--- a/src/nvenc/nvenc_base.cpp
+++ b/src/nvenc/nvenc_base.cpp
@@ -267,6 +267,9 @@ namespace nvenc {
       vui_config.colourPrimaries = colorspace.primaries;
       vui_config.transferCharacteristics = colorspace.tranfer_function;
       vui_config.colourMatrix = colorspace.matrix;
+      vui_config.chromaSampleLocationFlag = 1;
+      vui_config.chromaSampleLocationTop = 0;
+      vui_config.chromaSampleLocationBot = 0;
     };
 
     switch (client_config.videoFormat) {
@@ -315,6 +318,7 @@ namespace nvenc {
         format_config.transferCharacteristics = colorspace.tranfer_function;
         format_config.matrixCoefficients = colorspace.matrix;
         format_config.colorRange = colorspace.full_range;
+        format_config.chromaSamplePosition = 1;
         set_ref_frames(format_config.maxNumRefFramesInDPB, format_config.numFwdRefs, 8);
         set_minqp_if_enabled(config.min_qp_av1);